Alors la guerre ça m'étonne pas -> lit "therefore war does not surprise me"
There is no war on, he's just not surprised that there are such things as war - war does not come as a surprise - Dang... I don't know how to say that in proper English!

mai je n'ai jamais pu -> typo in the original (applying to be an editor might save me a lot of typing)

Alors la guerre ça m'étonne pas -> lit "therefore war does not surprise me"
There is no war on, he's just not surprised that there are such things as war - war does not come as a surprise - Dang... I don't know how to say that in proper English!

mai je n'ai jamais pu -> typo in the original (applying to be an editor might save me a lot of typing)

well yes, I mean the song also talks about some flaws of humanity at large. "war comes as no surprise " works on both levels, while "can't say I'm surprised" works only for the love story. Or am I imagining things?